Flexible packing for engine piston-rods and the like.



A. 0*. mm), FLEXIBLE .PAGKING FOR ENGINE PISTON RQDS'AND THE LIKE.

AP PLIO,ATION FILED 5111125, 1911.

Patented Sept. 17, 1912. fly. 2

Fig.1

Q Vitmwwo I Arihuf' U. Judd, 5] mm v rfoz f ags, E

iii

'. molly ll'llIU parts or sections the: number of FLEXIBLE PACKIIIG- ENGINE PESQIGILRQDS AND THE LIKE.

A E-moon 111643 January 28.

To ail 107mm 42 may comm-n:

Be it knmvi'l. that I, ARTHUR G. 3mm, a citizen of ihe United Sizii'csi, lCSldiflg at New York, in lhe county and State of. New fii fllii, have invented Poi-min :incl useful is; iiwovcmcnc; in ldlcxiblc Packing for Engine Piston-Rods illil lilo Lilac, of wliich. the following a l clear; and exact description:

This invm on relates no piston makings, more particularly l si'oa'zii engine pistoiis, and its chief objoct is to provide an impi'ovcd packing of tho socalleil flexible typo, for use with pi "021s which for any T821801] mic subjcct to vil'iraizioo or move went out of zilincmcnt Wilih the axis of (the engine cylinder. 7

With this and other objects. in VlBW tho invention cons iii iiisfi novel features of co'nsh'uction and combinations of elements hci'cina iicr described. v

A CO'i'iVQfilQlli) 21ml c'li'cci ive embodiment of the invention i=3 illustmlml in iho cocom panyingg (1m W ng, of which--- l 'igimo 1 i: an and, View of ill c ccpcaclc whicl'i mick steam. rim Fig 2 is Section on line 2-2 of 3 is plan vicw of one form of SiQkUH ring; which may be employed in my inveniion, "i iis figur also shows in dollfici lines the encircling co 1; ing ciiiplo v cil this "orm lo llfiltl the parts of the soctioiml siezun ring" yicldingiyi iogc'thcr when ilie giacki. i Fi 4; is ii. section on line 2111 View, pnritiy in scclion of z and oli'ecii form of self-lubricating pm, $hl ring which can be employed '0 advantage in conjunction with a suitable c2 .14; for example one of the type shown in 111 I ig: ii 2i secl'ion on lino 6 4} of Fig.

The ic oi cage which l1 prefer to employ with. my improved lingo is illustrated in Figs. 1 and :2 The cage-s there Si'lOWIl cylindrical in form and is divided longitui'liscctions in ilic prcsont i11Siii.l]C3 l designated by LG and ll. Vihcu I ions are. sccurcd lKLiQ Gillfil by #uitablc momma, as for cxampio bolts 12. At the cm of 'Chc mag c ii'm'm'illy 1: Boiling al'mtmcn or flanges .13, 14 are proviocil, pi'fflfifi'zlbly i1itom-ail {villi ihc body of the cage. :15 Sl'lUWll.

T 11c inlerior of the cage, bciwecn the nbutrnc-nts or flanges, is grooved circumfer- 1911. :Scrlal No. 80%,3'13.

cntially, as at 15, three such grooves being providml in the particular device illustratea. The interior of the cage is thus provided with ZONES of iliii ci'cnc diameters, the diameter the grooves being greater than at points: i'ntormcdia'tc to the grooves; While at the flanges or almlrncnLs 13, M, the inher diameter is than at the said intermediii-6 points.

The grooves 1:3, that is, the zones of greatest diameter, are in the pr-cscnt instance dc signed to receive the stczml rings, for cxmr1-- plez'ings of the kind illustrated in F gs. 2 and 3, each consisting of radially movable parts or sections, two in thc device shown,

ring in the o'i'oovca: as llllC pision rod Vi- 11mm; in {)1 cliicc this outer dmmctcr is usually ilctcimincci will: reference to the ammo: or cxicni of the vibraiion. of the rod.

'e'tv:ccn the steam rings, and between the liirsi (o? last) stcum ring and the adjacent almiiocni 1? or as the case may be, suitable pouring rings are provided, Vhen the laiici' arc of ilic rlli'ilfli'ifll type the "team rin 's and tho pol-King rings are preferably an uugodto inc joinis, suitable means for insuring such nu'eingcmcni. lacing provideei, as "ifr.=r cxmnplc the means; hereinafter do sci" AM. 7

When ilic packing; i5 in u' (generally will lilo abulmcni, l3 inncrmost or toward the si'cmn pressure so that the prcssnrc -acts in the direction of the arrow iii Fig. 2) the cll'cct of he otezun' m urc to force the first Ricmn ring firmly mi the opposite fame of the gi'om'c in "WlTHll the ring is mounted Any swam escaping :U'Olifld the of the ring hm; :1 similar action on A i ii ,i: iring, and soon in succession In well (m -W1 :uulwcll conolmciccl pack ing Him-c will no no (.QPRPC o3" steam past ,liic lust m ouicrmo rt ring. Any vibration or laicral mm'cmcnt of Hm piston rod from accm'uic :ilii'icmcnl with the axis of the cyl im'ior will be compcnsntcd by alteration in "the-positions ottlie rings int-heir respectire-grooves, and variation in the diameter 7 of the rod will cause expansion or contraction of the rings, Without injury to the rings or impairment of their efficiency.

When it is desired touse self-lubricating packing rings in a flexible piston-pecking,

rings-of the-type illustrated in Figs. 2, 5,

and G may lie-employed to advantage. In

th form thejubular ring is made in ra'dlally movable parts orsectmns, two in the present instance, designated by 1!), the sections being held yieldingly together by any suitable means, for example coil-springs 20, 21, seated -in circumferential grooves at the ontene'dg'es oi the ring. The interior of dine tubular ringis filled with lubricating material, preferably graphite, which, as the piston rod moves, is d arm from emission apertures 22 in sufficient amount to keep the contacting parts of rod and ring Well lubricated.

.i As stated above, it is desirable to have the 'eeotional steam rings and packing rings break joints. To insure the rings being always assembled in this manner one, at least, of

each pair of rings, is provided with an axially extending pin or stud 23 to fit between sections of the adjoining ring, as

' As in the case of the steam ring, the inner and outer dimensions of the flexible or ex pansible packing rings are such as to make the rings fit the piston rod snugly and to fit loosely enough, in the zones between the grooves 15 in the interior of the Page, to

' permit the necessary movement of the ring sections to compensate for vibration of the rod or variation in its diameter.

The devices herein specifically illustrated and described are those employed in the preferred embodiment of the invention, but it will be understood by persons skilled in the art that other forms may be used with out departure from the proper spirit and scope of the invention as defined by the appended claims.

What I claim is:

1. In a flexible piston-pecking, the combination with a. cage havinginner circunr ferential grooves, of expansi'ble steam rings mounted in the grooves and expansible tubular packing rings containing lubricating material, arranged between the steam rings and having emission apertures for the lubricating material.

2. In a flexible piston-packing, "the combination with a cage having inner circumferential grooves, of steam rings mounted in the grooves, each ring comprising a plurality of radially movable sections an d yielding means for urging the sect-ions inwardly,

steam rings and outside of said grooves. v

3. In a flexible pistoirpacliing, a cage for packing, and steam rings, comprising a hollow body having interior Zones of different diameters, in coinbinntion with flexible steam and packing rings arranged alternately in snidzones, the rings being of less diameten than their respective zones.

4-. In a flexible piston-packing, a cage for packing: and steam rings, comprising'a hol low cylindrical. bodv having a plurality of different inner diameters, and inwardly ex tending. circumferential flanges or abutments atthe' ends of the body, the inner diameter of the flanges or abutnients being less than the smallest inner diameter of the said body.

5. In a. flexible piston-packing,the combination with a tubular cage having inner circumferential grooves, of expansible steam rings mounted in the grooves, and expansible packing rings between the steam rings and outside of the grooves, the packing" rings being filled with lubricating material and. provided Witlremission apertures therefor w .7

6. In a flexible piston-pacl ing, in combination, e tubular cage; self-lulnicating packing rings therein, composed of radially movablesections containing lubricating marings for urging the sections thereof inwardly; and flexible steam rings associated with the packing rings.

-7. In a flexible piston-packing, in combination, a tubular packing ring composed of radially movable sections containing lubricating material and provided with emission apertures therefor, .i and means associated Withthe ring to press the sections thereof yieldingly inward, in combination with a cage inclosing the ring, a flange or abutmentextending inwardly from the cage on one side of the ring, and a steam ring on the other side of the packing ring. I 8. in a flexible piston-packing, alubular packing ring composed of radially movable sections containing lubricating material and he ving emi ion apertures therefor, the ring being pronded with outer circumferential grooves, and coilplin s in said grooves to press the ring sections yieldingly inward.

In testimony whereof I atlia' my signature in the presence of two subscribing Wit-- nesses.

a ARTHUR o. Juno. lil itnesses I S. S. DUNHAM,

M. LAWSON- Dren. 

